A connecting structure applied to a watchband and a watch case

Abstract

The utility model discloses a kind of connection structure applied to watchband and watchcase, it is related to wearable equipment connection field, comprising: the head particle (2) of the shell body (1) on watchcase and watchband, the assembly end of shell body (1) is equipped with mounting hole, the connecting end (21) of head particle (2) is equipped with connecting groove, connecting hole is equipped on the connecting groove, the mounting hole and the connecting hole are respectively perpendicular to the assembly end and the connecting end (21), the mounting hole and the connecting hole are through installation and are connected shell body (1) and head particle (2) with pearl connection;So, while improving the cooperation precision and assembly consistency of watch connection structure, reduce the mounting and dismounting difficulty between watchband and head particle watchcase.

Description

Technical Field

[0001] This utility model relates to the field of wearable device connectivity, specifically to a connection structure applied to a watch strap and watch case. Background Technology

[0002] In watches, the case and accessories need to be connected, and the main methods currently used are spring bar structure, pin structure, and screw structure.

[0003] The spring bar structure, due to the narrow space inside the lug or its inward-pointing shape, restricts drilling space, making lug hole machining difficult and requiring extremely high precision. Furthermore, the limited assembly freedom of the spring bar structure makes it difficult to control the fit clearance, resulting in low assembly efficiency. The spring bar structure relies on interference fit to ensure connection, but the clearance at both ends of the spring bar leads to insufficient stability after assembly, making it prone to loosening and resulting in poor structural stability. The pin structure requires through holes drilled through both sides of the lug for the pin to pass through, which damages the lug and affects the integrity of the appearance design. The screw structure has the risk of screws loosening and falling out. Additionally, to avoid affecting the appearance of the case, the headstock often requires an inwardly extending boss structure to accommodate the screw. Such bosses encroach on the limited internal space of the case, affecting the layout and assembly of internal components and increasing the complexity of the headstock itself. Utility Model Content

[0004] Existing connection solutions struggle to achieve a good balance between ensuring aesthetic integrity, reliable assembly, simplified manufacturing processes, and optimized internal space utilization. Therefore, it is necessary to provide a connection structure for watch straps and watch cases to address these issues. To achieve this objective, the present invention provides the following technical solution: a connection structure for watch straps and watch cases, comprising: a case and a headlink; a mounting hole is provided on the mounting end of the case; a connecting groove is provided on the connecting end of the headlink; a connecting hole is provided on the connecting groove; the mounting hole and the connecting hole are perpendicular to the mounting end and the connecting end, respectively; and a ball joint is included, installed between the mounting hole and the connecting hole to connect the mounting end and the connecting end.

[0005] Furthermore, as a preferred embodiment, the assembly end of the housing is provided with a connecting tongue, the connecting tongue corresponding to the connecting groove, and the connecting tongue and the connecting groove are mortised and tenoned together to connect the assembly end and the connecting end.

[0006] Furthermore, as a preferred embodiment, the mounting hole is a through hole on the connecting tongue, the side of the connecting groove is a groove surface, the connecting hole is a through hole penetrating one side of the groove surface, the mounting hole and the connecting hole are positioned correspondingly, the ball is installed in the mounting hole, and one end of the ball is connected to the connecting hole.

[0007] Furthermore, as a preferred embodiment, a guide step is provided on the side of the groove near the connecting tongue corresponding to the connecting hole, and the guide step is used to install the ball bearing.

[0008] Furthermore, as a preferred embodiment, the ball is provided with a ball head supported by an elastic element.

[0009] Furthermore, preferably, the length of the bead is the same as the thickness of the connecting tongue, and the width of the bead head is smaller than the diameter of the connecting hole.

[0010] Furthermore, as a preferred embodiment, the mounting holes, connecting holes, and guide steps are all in two sets.

[0011] Compared with the prior art, this utility model provides a connection structure for watch straps and watch cases, which has the following advantages: In this embodiment of the utility model, the use of a connecting tongue and a connecting groove with regular geometric shapes achieves the effect of mortise and tenon joint connection. The structure of the connecting tongue and the connecting groove is easy to process and the dimensional tolerance is easy to control, reducing the processing difficulty. At the same time, by pre-embedding a ball in the shell and pushing the head into the installation, the ball completes the fixing, making disassembly simpler and faster, improving production and assembly efficiency. Furthermore, because the fixing of the ball is a mechanical connection between the ball head and the connecting hole, the reliability of the connection is guaranteed. Attached Figure Description

[0012] Figure 1 A schematic diagram of a connection structure between a watch strap and a watch case provided in an embodiment of this utility model; Figure 2 A schematic diagram of a housing structure for the connection structure between a watch strap and a watch case, provided as an embodiment of this utility model; Figure 3 A schematic diagram of a lead-joint structure for connecting a watch strap and a watch case, provided as an embodiment of this utility model; Figure 4 A cross-sectional schematic diagram of the side of a connection structure between a watch strap and a watch case, provided for an embodiment of this utility model; Figure 5 A schematic diagram of a ball-bearing structure applied to the connection structure between the watch strap and the watch case, provided by an embodiment of this utility model; In the diagram: 1. Shell; 11. Assembly end; 12. Connecting tongue; 13. Mounting hole; 2. Headstock; 21. Connecting end; 22. Connecting groove; 23. Groove surface; 24. Connecting hole; 25. Guide step; 3. Ball catcher; 31. Ball head. Detailed Implementation

[0013] Please see Figures 1-5In this embodiment of the present invention, a connection structure for a watch strap and a watch case is provided. The watch strap connects to the wrist, and the watch case is equipped with a movement and other working devices. This structure is located at the connection between the watch strap and the watch case and includes: a housing 1 on the watch case and a last link 2 of the watch strap. A connecting tongue 12 is provided on the mounting end 11 of the housing 1, and a mounting hole 13 is provided on the connecting tongue 12. A connecting groove 22 is provided on the connecting end 21 of the last link 2, and a connecting hole 24 is provided on the connecting groove 22. A ball catch 3 is inserted into the mounting hole 13 and the connecting hole 24.

[0014] The mounting hole 13 is pre-installed with a ball bearing 3, the connecting tongue 12 is inserted into the connecting groove 22, and the ball bearing 3 connects the mounting hole 13 and the connecting hole 24, thereby enabling the housing 1 and the head piece 2 to be locked and fixed.

[0015] It should be noted that the mounting hole 13 and the connecting hole 24 are perpendicular to the plane of the connecting tongue 12 and the connecting groove 22, respectively. That is, the ball 3 is fixed perpendicular to the plane of the assembly end 11 and the connecting groove 22.

[0016] In this embodiment, as Figure 1 As shown, the shell 1 is connected to the head piece 2, and the connecting end 21 is locked to the shell 1.

[0017] In this embodiment, as Figure 2 As shown, the connecting tongue 12 is located on the assembly end 11 of the housing 1. There are two sets of mounting holes 13 on the connecting tongue 12. The mounting holes 13 are arranged symmetrically. The connecting tongue 12 and the assembly end 11 have a stepped structure. The connecting tongue 12 is located in the middle of the assembly end 11, which is a recessed area.

[0018] In this embodiment, as Figure 3 As shown, a groove surface 23 is provided in the connecting groove 22. A connecting hole 24 and a guide step 25 are opened on the groove surface 23. The guide step 25 is located on the edge of the groove surface 23 near the housing 1, and each set of guide steps 25 corresponds to a connecting hole 24.

[0019] There are two sets of connecting holes 24 and guide steps 25, with a gap between them, and the guide steps 25 are composed of an inclined wedge surface. It should be noted that the connecting tongue 12 and the connecting groove 22 are regular geometric shapes that correspond to each other, and the connecting tongue 12 and the connecting groove 22 can be connected by mortise and tenon joint.

[0020] In a preferred embodiment, the connecting tongue 12 may not be provided on the assembly end 11, and the connecting groove 22 may be directly connected to the assembly end 11. In this case, the width between the connecting grooves 22 should be set to be greater than the thickness of the assembly end 11, and the mounting hole 13 is directly opened on the assembly end 11. The assembly end 11 and the connecting groove 22 are locked together by the ball bearing 3.

[0021] In this embodiment, as Figure 4 As shown, the mounting hole 13 is a through hole, and the connecting hole 24 is a through hole that passes through the groove surface 23. There are two sets of groove surfaces 23 on a set of connecting grooves 22. Only one set of groove surfaces 23 has a connecting hole 24. The overall size of the ball 3 is slightly larger than the mounting hole 13. The size of the ball head 31 on the ball 3 is slightly smaller than the connecting hole 24. The overall size of the ball 3 is larger than the connecting hole 24, so that the ball 3 and the mounting hole 13 are interference fit. The ball 3 cannot pass through the connecting hole 24, but the ball head 31 can be inserted into the connecting hole 24.

[0022] During assembly, when the ball bearing 3 is pre-installed into the mounting hole 13, there is no slippage because the ball bearing 3 and the mounting hole 13 are interference fit. After assembly, the ball bearing 3 is limited by the size of the connecting groove 22 and the connecting hole 24 and will not move.

[0023] It should be noted that after the housing 1 and the head piece 2 are assembled, the connecting tongue 12 is inserted into the connecting groove 22. At this time, the connecting hole 24 is coaxial with the mounting hole 13, and the ball 3 is installed in the mounting hole 13. The ball 3 extends out of the ball head 31 to the connecting hole 24, and the root of the ball head 31 contacts the connecting groove 22. The root of the ball head 31 is restricted by the contact surface of the connecting tongue 12 and the connecting groove 22. Since only one set of groove surfaces 23 has the connecting hole 24, the installation orientation of the ball head 31 is determined by the position of the groove surface 23 where the connecting hole 24 is located.

[0024] In this embodiment, as Figure 5 The ball 3 has a ball head 31. It should be noted that the ball 3 has an elastic element installed inside.

[0025] The ball 3 contains a spring, which is fixedly connected to the ball head 31. When the spring is in its normal state, the ball head 31 extends out and compresses the spring, causing the ball head 31 to move toward the main body of the ball 3.

[0026] In a preferred embodiment, during the assembly of the housing 1 and the head piece 2, the ball bearing 3 is first installed in the mounting hole 13 with an interference fit, and then the connecting tongue 12 is inserted into the connecting groove 22. The two are connected by a mortise and tenon joint. At this time, the ball head 31 of the ball bearing 3 first contacts the guide step 25 of the groove surface 23. Through the wedge surface of the guide step 25, the spring in the ball bearing 3 is gradually compressed until it reaches the part of the groove surface 23 between the connecting hole 24 and the guide step 25. The ball head 31 retracts and continues to move. The ball head 31 enters the connecting hole 24, the spring is released, and the ball head 31 is locked into the connecting hole 24, thus completing the fixation of the housing 1 and the head piece 2. During disassembly, a special tool (such as a fine needle or pin) can be used to pass through the connecting hole 24 of the head bead 2 and apply force radially along the ball bead 3 to compress the spring of the ball bead 3, so that the ball head 31 retracts into the body of the ball bead 3. Apply force to make the ball bead 3 slide out from the direction of the guide step 25.

[0027] In this embodiment, a connecting groove 22 is made on the end link 2 of the watch strap to wrap around the connecting tongue 12 on the watch case, and the two are mortised and tenoned. A blind hole is made on the entire connecting groove 22 and the connecting tongue 12, and a mounting hole 13 is made on the connecting tongue 12. A ball catch 3 with an elastic telescopic part at one end is installed in the blind hole to fix the end link 2 and the watch case. The internal size design of the single-sided through hole makes the ball catch 3 located on the connecting tongue 12, and the ball head 31 of the elastic telescopic part of the ball catch 3 is outside the connecting tongue 12, which cooperates with the hole on the connecting groove 22 in the blind hole to achieve a detachable connection between the watch strap and the watch case. This method avoids drilling excessively long through holes on the watch strap and avoids drilling holes on the watch case that expose the display while ensuring the connection strength between the watch strap and the watch case. This ensures the design integrity of the watch strap and the watch case. At the same time, this embodiment occupies less space and has less impact on the watch case.

[0028] It should be noted that the structure in this embodiment is not only applicable to the connection between the watch strap and the case strap, but also applicable to the connection of the case and accessories of other wearable devices or precision instruments that require detachable and reliable connection and emphasize appearance integrity.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A connection structure for connecting a watch strap and a watch case, comprising: The shell (1) and the head piece (2) are characterized in that: they also include a ball bearing (3), the assembly end (11) of the shell (1) is provided with an installation hole (13), the connecting end (21) of the head piece (2) is provided with a connecting groove (22), the connecting groove (22) is provided with a connecting hole (24), the installation hole (13) and the connecting hole (24) are respectively perpendicular to the assembly end (11) and the connecting end (21), and the ball bearing (3) is installed between the installation hole (13) and the connecting hole (24) to connect the assembly end (11) and the connecting end (21).

2. The connection structure applied to the watch strap and watch case according to claim 1, characterized in that: The assembly end (11) is provided with a connecting tongue (12), which corresponds to the connecting groove (22). The connecting tongue (12) and the connecting groove (22) are mortised and tenoned to connect the assembly end (11) and the connecting end (21).

3. The connection structure applied to the watch strap and watch case according to claim 2, characterized in that: The mounting hole (13) is a through hole on the connecting tongue (12), the side of the connecting groove (22) is a groove surface (23), the connecting hole (24) is a through hole that passes through one side of the groove surface (23), the mounting hole (13) and the connecting hole (24) are in the same position, the ball (3) is installed in the mounting hole (13), and one end of the ball (3) is connected to the connecting hole (24).

4. The connection structure applied to the watch strap and watch case according to claim 3, characterized in that: The groove surface (23) near the connecting tongue (12) has a guide step (25) corresponding to the connecting hole (24), and the guide step (25) is used to install the ball (3).

5. The connection structure applied to the watch strap and watch case according to claim 4, characterized in that: The ball (3) is provided with a ball head (31) supported by an elastic element.

6. The connection structure applied to the watch strap and watch case according to claim 5, characterized in that: The length of the bead (3) is the same as the thickness of the connecting tongue (12), and the width of the bead head (31) is smaller than the diameter of the connecting hole (24).

7. The connection structure applied to the watch strap and watch case according to claim 4, characterized in that: The mounting hole (13), connecting hole (24) and guide step (25) are all in two sets.

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